18840420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:210

約数の個数: 144

約数和(自身を含む): 62270208

約数和(自身を除く): 43429788

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 47, 51, 60, 68, 85, 90, 94, 102, 131, 141, 153, 170, 180, 188, 204, 235, 255, 262, 282, 306, 340, 393, 423, 470, 510, 524, 564, 612, 655, 705, 765, 786, 799, 846, 940, 1020, 1179, 1310, 1410, 1530, 1572, 1598, 1692, 1965, 2115, 2227, 2358, 2397, 2620, 2820, 3060, 3196, 3930, 3995, 4230, 4454, 4716, 4794, 5895, 6157, 6681, 7191, 7860, 7990, 8460, 8908, 9588, 11135, 11790, 11985, 12314, 13362, 14382, 15980, 18471, 20043, 22270, 23580, 23970, 24628, 26724, 28764, 30785, 33405, 35955, 36942, 40086, 44540, 47940, 55413, 61570, 66810, 71910, 73884, 80172, 92355, 100215, 104669, 110826, 123140, 133620, 143820, 184710, 200430, 209338, 221652, 277065, 314007, 369420, 400860, 418676, 523345, 554130, 628014, 942021, 1046690, 1108260, 1256028, 1570035, 1884042, 2093380, 3140070, 3768084, 4710105, 6280140, 9420210, 18840420]

約数ペア:

[(1, 18840420), (2, 9420210), (3, 6280140), (4, 4710105), (5, 3768084), (6, 3140070), (9, 2093380), (10, 1884042), (12, 1570035), (15, 1256028), (17, 1108260), (18, 1046690), (20, 942021), (30, 628014), (34, 554130), (36, 523345), (45, 418676), (47, 400860), (51, 369420), (60, 314007), (68, 277065), (85, 221652), (90, 209338), (94, 200430), (102, 184710), (131, 143820), (141, 133620), (153, 123140), (170, 110826), (180, 104669), (188, 100215), (204, 92355), (235, 80172), (255, 73884), (262, 71910), (282, 66810), (306, 61570), (340, 55413), (393, 47940), (423, 44540), (470, 40086), (510, 36942), (524, 35955), (564, 33405), (612, 30785), (655, 28764), (705, 26724), (765, 24628), (786, 23970), (799, 23580), (846, 22270), (940, 20043), (1020, 18471), (1179, 15980), (1310, 14382), (1410, 13362), (1530, 12314), (1572, 11985), (1598, 11790), (1692, 11135), (1965, 9588), (2115, 8908), (2227, 8460), (2358, 7990), (2397, 7860), (2620, 7191), (2820, 6681), (3060, 6157), (3196, 5895), (3930, 4794), (3995, 4716), (4230, 4454)]